Interconnection between two-surface of multi-surface thin strip-shaped layers that lie one on top of the other, in particular, between two strips undergoing a continuous processing

Abstract

The invention relates to an interconnection between two overlapping end sections of metallic strips ( 10, 20 ) in which a quick and economical interconnetion should be produced. To this end, the invention provides that several annular welds ( 30 ) are provided in the overlapping area ( 15 ) which are situated at a distance from the face ends of both strips ( 10, 20 ).

What is claimed is:  
     
       1. Method of manufacturing an interconnection of two-surface or multi-surface, thin, strip-shaped layers ( 10 ,  20 ) made of metallic material ( 11 ,  21 ), which lie one above the other, especially of the overlapping end sections ( 13 ,  23 ) of two coilable strips ( 10 ,  20 ) during ongoing processing of the strips ( 10 ,  20 ) in continuously operating equipment, such as a sheet rolling mill or an annealing furnace, wherein interconnections ( 30 ) are provided at a distance ( 16 ,  27 ) from the face ends ( 17 ,  26 ) of the two strips ( 10 ,  20 ), characterized by the fact that several annular interconnections ( 30 ) are produced solely by welding between the two layers of strips ( 10 ,  20 ) in the overlap region ( 15 ), wherein a hole ( 32 ) is burned into the strip material ( 11 ,  21 ) of the two layers ( 10 ,  20 ) in the annular interior ( 31 ) of the annular welds ( 30 ). 
     
     
       2. Method in accordance with claims  1 , characterized by the fact that the metallic material ( 11 ,  21 ) of the two strips ( 10 ,  20 ) flows together ( 35 ) at the edges of the annular welds around the hole ( 32 ). 
     
     
       3. Method in accordance with  claim 1 , characterized by the fact that the annular welds ( 30 ) are manufactured in at least one linear row ( 25 ), wherein the linear row ( 25 ) of annular welds ( 30 ) runs in the transverse direction of the strip. 
     
     
       4. Method in accordance with  claim 1 , characterized by the fact that the annular welds ( 30 ) are manufactured with a circular shape ( 33 ) during welding.